PROBLEM TYPE · INVALID_PREFIX

A company prefix is 4 to 12 digits

The request was refused before anything changed.

Status
400
Code
INVALID_PREFIX
Type
https://packagepage.com/problems/invalid-prefix

What this means

A GS1 company prefix is between 4 and 12 digits and nothing else. No spaces, no dashes, no country letters in front of it.

Why it usually happens

A prefix pasted out of a spreadsheet usually arrives with a trailing space, or with its leading zero removed by the spreadsheet on the way out.

What to do

Retype it exactly as it appears on your GS1 licence, digits only. If it begins with a zero, keep the zero. It is part of the prefix.